A Marion mother of two daughters who was badly injured in an assault by her boyfriend early Thursday and taken to intensive care has died, police said Monday.

Stephanie Bowling, 24, of 795 Bentley Drive, died Saturday at the University of Iowa Hospitals and Clinics of injuries she suffered during the attack by Cody Lee Brown, 27, at the residence, police reported.

Bowling worked at GoDaddy in Hiawatha and had two young girls — Annabelle, 5, and Avianna, 2, said Bowling’s mother, Tricia Eilers of Monticello.

Avianna was at the apartment at the time of the incident but remained asleep, her grandmother said. Both girls are staying with Annabelle’s father and are doing well, Eilers said.

“The oldest, her dad told her her Mom was sick,” Eilers said. “She knows she’s not coming back, but doesn’t grasp it all yet.”

Marion police had responded to reports of a domestic disturbance about 2:53 a.m. Thursday. Bowling was found unresponsive on the living room floor when police arrived, a criminal complaint states.

Brown told police he and Bowling were arguing when he picked her up and threw her to the ground, records showed. Preliminary indications at the hospital were that she suffered a serious brain injury.

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Brown was booked into the Linn County Jail on a felony charge of domestic assault with serious injury. He posted bail and was released.

Eilers said she had not heard whether Brown will face additional or amended charges now that her daughter has died.

Marion police said they were still investigating and declined to release further information Monday. Court and jail records showed no report Monday evening that Brown had been taken back into custody.

Eilers said she didn’t know Brown, who had been dating her daughter about four months.

“She didn’t bring him around too much,” Eilers said.

An autopsy of Bowling’s body was done Monday , her mother said. She asked them to leave untouched her daughter’s fingernails, which had been freshly manicured before she died.

“I called her my froufrou girl,” she said of Bowling. “She liked to have her nails done all the time.”